| 摘要 |
PROBLEM TO BE SOLVED: To provide a filament lamp including a novel filament holding structure capable of suppressing light emission in a light non-emission area of a filament while preventing the filament from being deformed or damaged.SOLUTION: The filament lamp is formed by disposing a filament which includes a light emission area and a light non-emission area, within a light-emitting tube while being supported by a supporter. The supporter includes: a ring-shaped holding part which is abutted to an inner surface of the light-emitting tube for holding the filament so as to position the filament on a tube axis of the light-emitting tube; and a coil-shaped engaging part engaged to a coil-shaped engaged part formed in the light non-emission area of the filament. The engaging part is provided while covering an entire outer circumference of the engaged part in the filament. |
